The 1998 Diamond Back Assault EX BMX features a lightweight 7005 alloy frame with oversized tubing and a gusseted head tube for added strength, paired with a DB fork using a 1” steerer and 1-1/4” chromoly blades finished in chrome. It comes fitted with DB MX-40 handlebars offering an 8-1/2” rise in chrome, held by a DB alloy four-bolt stem. Braking is handled by a Pro Max alloy linear-pull brake with matching lever, while the drivetrain uses a DB one-piece chromoly 175mm crank in chrome with a DB quick-change 44-tooth chainwheel, also in chrome, matched to DB alloy platform pedals with chromoly 1/2” axles. The wheelset consists of DB alloy 20x1.75” 36-hole rims, alloy hubs, and 14-gauge spokes, wrapped in Comp III-style tyres (20x2.125” front, 20x1.175” rear). Comfort comes via a DB padded seat with an alloy micro-adjust seatpost (27.0mm). Finish options were ball-burnished with a chrome fork, or white with a chrome fork.
Alloy Frame
1pc Cranks
Alloy Rims
To use the BMX SerialFinder start typing the whole serial into the search bar at the top of the page, or use the Advanced Search page. Based on your entry, a filtered list of possible bikes that match your serial year and month will appear.
Diamond Back BMX serial numbers.
The first character H is the factory code.
After the above factory code, the next character is year of production. 7 = 1997, 8 = 1998. Production would have most likely started around May 1997 through to April 1998.
After the year is month of production. A = January, B = Febuary, C = March, D = April, E = May, F = June, G = July, H= August, I = September, J = October, K = November, L = December
Example: H7H00000
Made in Taiwan.
As a general rule, bikes made in Taiwan had around a 8 - 9 month production lead timeline before they were delivered and sold in bike shops around the world. Generally around May of each year, factories would switch production to making models for the following year.
